provide syntax based [colour] highlighting on code blocks for popular languages. I'm not happy with the line height on the list elements but couldn't see where this was defaulted. This uses the syntax [code=xxx]some code snippet[/code], where xxx represents a code/language style - with about 18 builtins.

1 files changed, 38 insertions, 0 deletions

diff --git a/include/text.php b/include/text.php
index bd59aa732..7b43ece43 100644
--- a/include/text.php
+++ b/include/text.php
@@ -2881,3 +2881,41 @@ function flatten_array_recursive($arr) {
 	}
 	return($ret);
 }			
+
+function text_highlight($s,$lang) {
+
+	if(! strpos('Text_Highlighter',get_include_path())) {
+		set_include_path(get_include_path() . PATH_SEPARATOR . 'library/Text_Highlighter');
+		head_add_css('/library/Text_Highlighter/sample.css');	
+	}
+	require_once('library/Text_Highlighter/Text/Highlighter.php');
+    require_once('library/Text_Highlighter/Text/Highlighter/Renderer/Html.php');
+    $options = array(
+        'numbers' => HL_NUMBERS_LI,
+        'tabsize' => 4,
+    );
+	$tag_added = false;
+	$s = trim(html_entity_decode($s,ENT_COMPAT));
+	$s = str_replace("    ","\t",$s);
+	if($lang === 'php') {
+		if(strpos('<?php',$s) !== 0) {
+			$s = '<?php' . "\n" . $s;
+			$tag_added = true;			
+		}
+
+	} 
+    $renderer = new Text_Highlighter_Renderer_HTML($options);
+    $hl = Text_Highlighter::factory($lang);
+    $hl->setRenderer($renderer);
+	$o = $hl->highlight($s);
+	$o = str_replace("    ","&nbsp;&nbsp;&nbsp;&nbsp;",$o);
+
+	if($tag_added) {
+		$b = substr($o,0,strpos($o,'<li>'));
+		$e = substr($o,strpos($o,'</li>'));
+		$o = $b . $e;
+	}
+
+    return('<code>' . $o . '</code>');
+}
+